Electrically-operated door.



Ef; KRYTOWSKI. BLBCTRIGALLY OPRATED DOOR.

APPLICATION FILED. nuff, 1912.

. 4 SHEETS-SHEET 2.

ATTORNEYS G. KORYTGWSKI. ELBGTRIG'ALLY OPBBATBD DOOR.

APPLwnIoN FILED 1111.5. 1912. I 4

Patented Feb. 20, 1912.

- 4 SHEETS-SHEET 3.

ATTORNEYS GUSTAV KORYTOWSII, OF BERLIN, GERMANY.

Specification of Letters Patent.

Patented nel. 2o. 1912.

Application lled January 5. 1919. Serial No. 669,608.

To all whom it may colwem:

Be it known that I, GUsTav Konrmwsm, a citizen ofthe Empire of Germany, residu ing at Berlin,in the Empire of Grerman v, have invented a new and useful Electrically-Operated Door, of which the followiniis a specication.

y invention relates to improvements in electrically operateddoors adapted to-open in either direction, whereby the following novel effectsl are obtained: Thedooi` is in- .variably openedl by turning in the saine direction in which one wants to ass through and when .oneis out of -reach of the door, it is automatically returned to closed position. During opening the door is obliged to first complete its full turn, before it is released and is'automatically turned back. When it is desired, the door may be locked in any position` Where so preferred, the door may be permitted to operate only after the current has been closed by the porter or by means of some coin-freed apparatus. According to my-invention a movable door plate beneath the closed door and extending to both sides is adapted on being trodden to engage either of two reversing switches for closing one of two circuits, whereby an electromotor is set to rotate in one direction and to open the door by means of a worm gearing and 'a vert-ical shaft, while at the saine time an electromagnet is energized for locking,r the reversing switch engaged and preventing it from opening the circuit on the floor plate being released. The vertical shaft carries on an arm two superposed pairs of contact brushes which are connected b v conductors with the commutator brushes of the electromotor. Contact segments concentric with .the vertical shaft are inserted in the two circuits and on these contact segments the four contact brushes are made to slide.-

After the full turn `of the door the closed circuit is -opened by two contact brushes coming out of contact. with two long contactseginents, so that the reversing switch hitherto locked'is released and in returning to its ini-tial position closes the other circuit, whereby the electromotor is set to 1'0- tiate inthe opposite direction for closing the oor.v

set forth and pointed out in the claims. I will now proceed to`d'escribe my inits 'normal Other improvements will be hereinafter simi ar parts throughout the several views.

ratus, the movable oor plate being assumed to rock about an axis 1n the plane of the closed door and the turns of various levers being drawn exa gerated Afor'the sake of clearness, Fig. 2 lagrammatically shows 'a modified floor p1ate,vwhichis supported in its middleby ,s` rings and 'is depressed on the left, Fig. 3 iagrammatically-illustrates the same floor plate when depressed in its middle, Fig. 4 is a vertical section through the line A-B in Fig. 6, seen in the-direction of the arrows, and shows the lower art of a door in its closedstate, the movab e door plate and a casing with the devices thereunder, Fig. 5 is a vertical section through the line C-D in Fig. 6, seen in thedirection of the arrows, and shows the floor plate and the casi-ng in section and boxes inclosing devices in' elevation, Fig. 6 is a horizontal sect-ion through the line E--F in'Fig.- 5," Fig. 7 is a vertical section on an enlarged scale through the line G-H in Fig. 6, seen'. in the direction of the arrows, the line I-J in Fig. 8, and showsparts of the casing, the flooring and the floor. plate in sec-tion and the electromotor with the worm' gearing, the vertical shaft and the arm.with contact brushes in elevation', Fig. 8. is a horizontal section through the line K-'L in Fig. 7, Fig. 9 is an elevation of the contact segments with their supports, seen' in the direction from left to right in Fig., 8, Fig.

10 is aver-tical section on an enlarged scale through 'the line M-N in Fig. 6, seen .in the direction of the arrows, also through .the line O P in Fig. 11, seen in the direction of the arrows, andshows one reversing switch, Fig. 11 is a vertical section on an enlarged scale throughthe line Q-R in Fig. 6, ,also through the line S-T in Fig. 10,seen in the direction of the arrows, Fig. 12 is a.

throughl vertical section on anvenlarged sealV the line U-V in Fig. 6, seen in tie direction of the arrows, also through the line, W-X in Fig. V13, and shows'l one relay in;

end view and its easing in section, and ig.:y

13 is a vertical section through the same oni the line Y-Z in Fig. 12, seen in the direction of the arrows.

Similar characters of reference refer to' Beneath a closed door 7 (Fig. 4) to be op-y erated a rectangular opening 57 indicated by dotted lines 1n Fig. 6) is provi ed in the tloorin 56, which opening extends to both sides o the door 7 in its normal closed position. Beneath this opening 57 a suitable base 58 of any known kind is rovidcd, on which a board 59 may be isposed. 'A frame 460 is shown to be placed on the board 59'ifor sup orting the flooring 56 around the opening Theframe 1s shown to be made in one with u boxl 61 (Figs. 4, 6-7fand 8), which `will bejreferred to. later'on. ,A movable floor 'plate f lis mede to en' age in the 'opnin 57and may in its mid e`be supported y twobutl'er sprin 155,551- vIt is p ovided on itsunderside wit tw'ngers 62, 2f seepalsolii l 7)in' its middle cross linean wit., twoSi edgos53 (seeralso-Fg. 11), 53"atitop yosite 5,25". The; twpbuti'er springs 5,1:55 bearing from'zbelow against .the fiocrvplte preSsthc 'two fin-v ers 62 62and the'two le ges 53, 53 against ie un erside of the edges 'of the fioorin 5,6, whereby the door lplete f 4is prevented rompro'ectlng above t e oorin. f

4Viithin the box-.61 isis-posed onl the board 59 ,an electromotor 6 (Figs. 7 and 8),4 which carries on its armature shaft a worme- 64 that meshes with a. worm-wheel 65 fastened n a vertical shaft 66. The shaft 66 mounted to turn -in two bearings 67 and 68 is madein one with anarm 69, whichhas a radial slot y70. A `door 7 adapted to open in either direction is provided and may be of any known construction, which I do not dehere, as it is immaterialto my invenfieni This door '7 is revided f with erin '70',-whichehgges eslot ,70 off-' themrml 69,V 's 'ojthetfin'lthismanner; the r door; 7: is 40 obli edto partake inthe-tumvoffthe'vertcal shaft 66. On` theshaft-66-is .fastenedan arm' 71which on its upper and Alower sideis y connected with two brush holders 72, 73 in- 'sulated therefrom and carrying each two cont-act',` brushes 14,-14,15, 1 5. A pliable conductor 74; connects .the upper brush holder-72 with one oommutator'brush 75 of th'eelectromotor V6, and another i pliable conor' 76 connects the lower brush@ holder 5o 731;, yit h tli e @ther com mutator brush -77. ,Thrga supports 78, 79, A 80 disposed4 on the board 59 oarrytwo long contact segments 8. and 9 -(Fig. 9) and 'four short contact'seg# ments 10, 11, 12 and 13, allozfwhich are concentric'withthe shaft 66.1'ind are insulated from. the supports. f'lhe four contactj brushes' 14, A14' 15, 15 .aremade to come in contactjwith essidcontact segments 8 to 131;-.. Thr f" epee.. eneaod-e extendfrem P110.'1miffl'tlih'r-78-.over middl'sup ort-79 tothe other ouTter-sup-'f port SQ *an* one, 8 fis" electrically 'cohected: with-two conductors 29 land 29", .while Ythe ends of the two lon contact segments Band 9 do not extend to the outer edges of the two outer 'su erts 78 and 80 and'for this reason two E lings 81, 81 or 82, 82 of insulatin' material for cach segment are made to l up the. gaps, so that the outer contact brushes 14, 15 can rub onth'ern in the ex` treme positions ofth door 7. The' four short con'tact segments 10,11',' 12, 13 form two pairs and extend from one outer sup port 78 -or 80 to the inner su port 79` and the segments of each air are lvided by an insulation 83 or 84; 'Fh

39, and in a similar manner'the other con tact segments 11 '12, 1'3 are severally connected with cond ct rs38, 39", 38. rlhe two -long' contact segr'n s '8| and 9 serve for ,opening the door 7? in eithetfdircct-ion, the amature of the electromotor 6 running in one direction, when the current circulates in one dircctiom;and'in'the other direction, when the current circulates in 'themppositc direction. It is evident, that the currentor opening the door 7 is opencd'for cach ex; tremeposition of the door.v The two short contact segments 1Q, und 41t serve for clos'- in the door 7 in one direction and the two' ot er contact se ents 12 and 18 for clos# ing the door in t e o posite direction. The

e contact segment 10 is electrically connected with o' conductor current for Yclosing t e door 7 is of course opened atthe moment that the 'two inner 'f contact brushes 14, 15 come Iin contact' with the insulations 83, 84.

Within the frameY 60 two opposite boxes 85, 85 (Fi 6) are disposed on the board l59, 'which goxes eachcontain. a reversing switch-relay shown Vat Figs. 10 and 11. Ihis 'relay'-"comprises:A a frame 86,/'ja reversingvv switchf23 rocking therein and; an electromagnet 24. The switch 23 has a rear' erm 87, on which a lprojection 89 on the ledge 53 assing throng a hole 88 in the box 85 can ar. The free end of the switch 23 carries on the lower side three forked contact pieces`-18, 19, 20 and on the upper side two vforked contact V pieces 16, 17, all of which areV insulated .from the switch 23. Beneath the three lower contact pieces 18, 19, 2O six contact pieces 44", 45 32', 39', 37', 38' are fastened on-fthc'board .upper contact? pieces l16. 17 four contact. piccesl 30", 29', 28 are fastened on the: inner side of the. frame 86. AVhen the elec-4 tro m sign Y et24 is' without current, the switch. 28 is itsown ,wei ht pressed vdownward,

59." Above the two';

so that thereby-the t rcelower forked contact' 'eces 18, 19', 20 are pressed on the in eline surfaces 'of' the sprin Contact pieces plate f is depressed,-the projection 39 of the edge 53 striking 4the arm 87 willtnrn the switch 23 upward arid press the two upper e othercontact segment' 9V is electrically con-- 65 nected'with 'two'conductors 30 and 30, The

forked lcontact pieces' '16, 17 against the inclined surfaces of the springy contar-t pieces 29, 30, 38.39 have already been mentioned above with reference to Fig` 9. 'lhe electrothe magnet 24 is inserted in the conductor 29, ns is clearly shown at Fig. 1. lVithin the frame 60 also two other bo-xes 90,90` (Fig. (i) are disposed on the board 59, which boxes each contain a relay shown at Figs. 12 and 13. This relay comprises a frame 91, an armature 2G rocking therein, a support-92 and an electromagnet 25 fastened thereon; The armature 26 carries on both sides two insulated Contact pieces 21, 22, of which one 21 is adapt-ed to come in contact'with two springy contact pieces 44", 45" and the other contact piece 22 is adapted to come in Contact with two springy contact pieces 27', 28.v The contact pieces 44", 45' 27', 28" fastened on the' boardv 59 are respectively connected with conductors 44, 45, 27, 28 shown in Fig. 1, and the' conductors 44, 45, 2S have already been mentioned above. The

. electroulannet 25 is by means ot a conductor 52 shunte to the contact pieces 45" and 27'. A spring 93 rigidly connected with the armature 26 'and bearing against a nose 92' of the support 92 serres` for normally pressing the contact piece 22 against the two contact pieces '27 2S", while on the electromagnet 25 bein energized the contact piece 22 will be detaghed from the contact pieces 27', 28" and the other Contact piece 21^willbe pressed against the two contact pieces 44", 45'.

The parts contained in the-boxes 85l and 90l arel Similar to those contained in the boxes 85 and 90, but their characters of reference differ in that the index a is added, as is shown in Fig. 1.

The conductor 31 is joined to the conductor 32 and the conductor 37 is joined to the conductor 2S. .1n a similar manner 3l is joined to 32* and 37* to 28. The conductor 32 is joined to the conductor 44* in the other easing 85* andthe conductor 32' is joined to the Iconductor 44 in the easing 85, as is clearly shown in Fig.4 1.. A battery 4 (Fig. 1) or other source of current is disposed, one pole of which is connected with the conductor 27, while the other pole is connected with the conductor 27.

For the sake of simplicity in Fig. 1 the electrouiotor 6 is indicated by a thick circle concentric with the contact segments'S to 13 and the floor late j is assumed to rock on un edge 63, wiiile the reversing switches 23, 23* are replaced by twoarmed levers.

The mechanism represented by the dia` gram in Fig. 1 operatesms follows: Then any one approaching theclosed door 7 from left depresses the left end 5 of the Hoor plate f, he thereby depresses the right arm of the two-armed lever V23 in F'4 1, that is to say, he depresses the arm 87 o the switch 23 in Fig. 11 by means of the projection 89 of the led e 53, so that by means of the u per forlce contact pieces 16 and 17 and t e two pairs of contact-pieces 31', 30 and 28', 29 the conductorsv 31, 30 and 28, 29 are electrically connected together` Then a'cllrrentI will pass from the battery 4A through the conductor 27, the lcontact pieces 27', 22, 28"', the conductor 28, the contact pieces 28', 17

29', ,the conductor 29 -and the eleetromagnet 24', the Contact l segment-8, the contact brush 15 (Fig. 8), the brush holder 72, the 00n-l ductor 74, the electromotor 6, the conductor 76, the brush holder 73, the'contact brush 14, the Contact segment 9, the conductor 30, the contact pieces 30', 16, 31', the conductors 31 32, 4c, the Contact Pieces 44, 18, 45s' mi afterward "also l44"' the conductor 27- back to the battery The electroinagnet 24 energized attracts its armature and thus loclirstli'el''e'ers'ng`4 switch 23, in other words'- prevents this switch from returning to its linitial (lower) position erglzed attracts its armature 26l and thereby presses thevcontactpiece 21'* against the contact pieces 45.*", 44"' (-Fig. 13), so that no current can pass from the contact segment 13 through the conductor 38, the Contact pieces 38", 20, 37", the conductors '37, 28, the

contact. pieces 28"', 22,'27"' and the con ductor 27* back to the battery 4. The elec-A tromotfor G energizedturus by means 0f the 21, 45"', the con-A ductors 45, 52", the electromagnet 25* and `-wlien the end 5 of 'the floor plate f 'is no longer depressed. The electromagnet 25' enI worm 64, the worm wheel G5 and the shaft 6G the door 7 in the direction of the arrow (Fig. 1), that is into the position 7, so that one can pass through.4 When now he de presses the other end 5'* of/the. floor plate f and thereby turns the left arm of the twoarmed leve-r 23 downward, in other words presses the upper forked contacti pieces 16, 17 against. the contact pieces 31",`30",' 28", 29', this will bc of no consequence, since no current can pass from the contact segment 8 through the conductor 29, -the'con- 28, 27", 'because this circuit is interrupted by the contact .piece 22"detached. 'llie'door 7 turning in the direction ofthe arrow'35 may continue to move l"or it luayhave stopped in the position" 7", 'the-contact- At this moment thev .electromotor 6. (in a direction o ywh'ei-.eupoii 'th'e contactbriislies f of .contact fwith vthe .contactsegments 12, 1.

aiA

ae', 3e', a7', as', in other words the twoarmed lever 23 in Fig. 1 assumes a position similar to the two-armed lever .23* in Fig. 1, while at the same timethe' contact piece 21* is detached from the correspondingcontact 'pieces 44"', 45" and the contact piece 22Min pressed against the correspondingv contactpieccs 28, 27", in other-wo'rde,the

. contact pieces 38",' 20.*, 37",y theconductors ,137, 128, the-'contactfpieces 28"5,

and the conductor' ibac'kgtb'the batter 4; The'eleetromotor tlenerg'izedturne the oer 7 =bac k *.ii'to,Yitsnbrmal :closed positioi'l,

so that the circuit is o enedand'the elec,

tromotorfG-and therewith. also the door 7 bvously asimilar series of occurrences wil1take place .when one approaching theA door 7 from the right in Fig; 1 dcpressei the right end '5 of the. Hoor plate y.

Two` switches-mando) are shown to be inserted in the conductors 27 and 30 reter to o eneither of these switchenI aii thereby 4ofiition or t'o'zkeep the door 7 iii ils-closed vin eithero its two cxtreme positions :7b and 7 as no curi'cntis permitted to passthrough the electro-mot0r Or when the door 7 is being moved in either direction it is possiblebyvopening either of said switchefik v 51 to stop, the door iiiany position, for

example that marked 7* or 7 in Fig. 1. Any,of'tl i ese ewitelics-iniglit also form a paitof .sonic coin-freed dppaijatiis,.,so that theixisertion ofai4 coi mechanism to. operate thelloor .plate f is depr 'sed .on either. side oftlieelosed door.A

v 'Ih'e edge 63 shown` in '1 i'g. 1 presenta thev drawback, that- When an 't'one has, in the above described-manner mused the door to o enl ,by. depresmingithercnd or of te tloor plate f ,and when ,-hefhappens to ls'toii. .inst in, .the 'Jntldl atni'vetlieedge 63, they r.' plate f may rc1 turn to itenormal .horizontal position 4 and 391', the conductor 39, the

-door 7 will be stopped and' be prevented vfrom' striking the person 'iitaiiding on the .floor plate .respects without departingfrom-the spirit 14 come eig spect,` ely,v so that itispoaeible .for the porother person charged with the tas-k1 ,would permit he". the moment that' `tion 'of' said electromoto of the' floor plate door may strike and hurt the person standing on the floor 'plate This drawback is according to my invention avoided by replacing the edge (33 by the buffer springs 55, 55 described` above. Fig. Q'illustrates the position of the so inodifiedfloor plate f, when it is depressed on the left end 5, whenthe ei'ect produced will be much the same as described above with reference to Fig. 1. Fig. r3 on the contrary illustrates the horizontal position of the floor plate f, when one standson it just above the butler springs 55,-and it will liecen, that in this case both ends of the loor plate by means of th'e two ledges 53; 53 depress tie inner arms of the two two-arined levers 23 and 23, so that both circuits are opened and no current can pass from .the battery 4 4throu h the eleetromotor 0. In consequence of t is the The mec ianism described for electriealy Q'peratingthe door canbe varied in mun of my invention. T ic eleetroniotor 6 might he `disposed on Home wallv or in a recess therein and may be conhected by long conductors 74, 76 with the' two brush holders 72, 73. The apparatus illustrated might also be-disposed in the ceiling above the door to he operated.

I claim l. The combination with a dooivadapterl to open in either direction, of a movable 1o@ loor plate ula ted to bc inclined on being trodden on eitiivci' side of thecloeed door, iin electromotor adapted to turn said door iii either direction, means o erated from either end of said loor lute w ieii dcpressed 105 for so controlling the direction of rotation of .said clectroinotor, the rotation of the motor t0 ,turn the door away from tl'iede- ,serving end of said lloor plate, and ineens pressed controlled bythe movement of the door f or lio causing the return of the open door to, its closed osition. 2. T e combination with e. door adapted to open in either. direction, of a movable er. side' of' the closed door,

'floor plate adaptcdo he inclined on being 115 ',ti'odden on'ei'tI an electromotor adapted to turn said floor ierated from in either direction, means o in n' flcpreJ-ifaed either end o said floor plate'w for so eontrr'illing th. rotntionof the inr'itor serving lo turni the door away. from Vthe dnp'reesod. end of said ltioriyilzit,nii-'l' nii-ans* operated from finiti door in either ex- Iroinofposition l'if'ir'cversing said el'ectro- 126.

motor and thusj returning ythe door to, its closed position. i

2t. 'lilla combination with' a'door adapted to open in either tiiinction, of 'amov'alilc floor pluie nflsiptwl to he inclined on lining trod 130 the direction of rotin 1 20 rromotor adapted to turn said' door 'in eitherl -mg .Quid floor plate troxn projecting above Vlaming-switch whcu'enguged end on being .circuits cuchufluptccl to noruuillyffzloseone from sziiild-o'or in either extreme position for is released so that it' returns t'n its initial 'extending from the cloned door tn hoth :inleg Syirings supporting. seul lloor pluto x'n the P 'c uits for alternatelyl turning suil electro- Aadxiptedfto xfxorninllycl'ose one circuit und o n' being 'operated ro'nnthc corn-.spending enrl direction, two circuits-for u termite! y. turn-1'v ing sind clcctroinotor in one 'ol-the olhordl rectlon, tworcversing swxtcheu-"m .seul tw o.

andA to'ch'ise tliefgtlier-circnit; means operated penin'g one circuit :mtl closing the other einA cuit whereby the revcrslng switch engaged position, and means opcriLl-(ul fronrsziid door mi reaching its norinnl closed position for opening the other circuit.

4. The coinl'iin'ution with njiloorzulnpted to open in either direction, of u lloor plate movable i|1' :|n opening in the flooring unil.

ane of the closed door, means for prevent.-

the l1ooring,'an" ,elcctrmnotor :uhipted t0 turn said-floor in either direction, two cirnlotor in one or the other direction, tworeJ verslng mvitohes' In szlul two circuits c:u.h

ofsuid floor pln'lc when lroilelen to open' this circuit und to close the other circuit1 two electromagnets Y in ..sul' two circuits euch mlnpted to lock the corresmindng 'reversing switch whcn once en ruguhlwo rcluys severally shcntedto sith two erelxits und euch mln tedio nc'rn'mlly prepare one circuit for closing by'lneuns of thecmrespo1nling re-l (inerg-inail open this cirtuitind'lto 'close the other 'c|rc11'|t, menn's opegntdfjrm-sa1d door xii-either cxtreme.' fiositxqn`for pening one i circuit afnrl closirgtheiotherci it whereby fthe. reversing s wit'eh engaged-i9 eleased" so that it retl'lrns ,towit f means operatetl fromm'd door' yon' reaching its.t normal claed p'oitioii fici; penin'gthe. other circuit, satigl'oorfinte whenftrodden in the middle crosdiieing-ndeptd teso operate scid two "reversi ng s wiwhps as' t0- siln-ush i'l'i uuid tivo lirusli#holdin-sitimovable 1 lloor pluteudupt-ed tohe inclined 'on be'ingj.' trmlclcn'on either. Hide of` the 'clogd (loon-twg' circuits of.. whiclxone.-inelmlej-seid -tiyo'long )mim .oli short conhu-.tsegments, levi 

